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<a href="_elitist_c_m_a_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">//===========================================================================</span><span class="comment"></span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment">/*!</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> * </span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> *</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * \brief       Implements the most recent version of the elitist CMA-ES.</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * </span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * The algorithm is based on</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> * </span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> * C. Igel, T. Suttorp, and N. Hansen. A Computational Efficient</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> * Covariance Matrix Update and a (1+1)-CMA for Evolution</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Strategies. In Proceedings of the Genetic and Evolutionary</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * Computation Conference (GECCO 2006), pp. 453-460, ACM Press, 2006</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * </span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * D. V. Arnold and N. Hansen: Active covariance matrix adaptation for</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * the (1+1)-CMA-ES. In Proceedings of the Genetic and Evolutionary</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * Computation Conference (GECCO 2010): pp 385-392, ACM Press 2010</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"> * </span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment"> *</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"> * \author      O. Krause T.Voss</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span><span class="comment"> * \date        2014</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="comment"> *</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="comment"> *</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span><span class="comment"> * \par Copyright 1995-2017 Shark Development Team</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="comment"> * </span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span><span class="comment"> * &lt;BR&gt;&lt;HR&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment"> * This file is part of Shark.</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment"> * &lt;https://shark-ml.github.io/Shark/&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment"> * </span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="comment"> * Shark is free software: you can redistribute it and/or modify</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment"> * it under the terms of the GNU Lesser General Public License as published </span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"> * by the Free Software Foundation, either version 3 of the License, or</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment"> * </span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="comment"> * Shark is distributed in the hope that it will be useful,</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment"> * GNU Lesser General Public License for more details.</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="comment"> * </span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="comment"> * You should have received a copy of the GNU Lesser General Public License</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="comment"> * along with Shark.  If not, see &lt;http://www.gnu.org/licenses/&gt;.</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="comment"> *</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="comment"> */</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="comment">//===========================================================================</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span> </div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span> </div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="preprocessor">#ifndef SHARK_ALGORITHMS_DIRECTSEARCH_ELITIST_CMA_H</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="preprocessor">#define SHARK_ALGORITHMS_DIRECTSEARCH_ELITIST_CMA_H</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span> </div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="preprocessor">#include &lt;<a class="code" href="_d_l_l_support_8h.html">shark/Core/DLLSupport.h</a>&gt;</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="preprocessor">#include &lt;<a class="code" href="_abstract_single_objective_optimizer_8h.html">shark/Algorithms/AbstractSingleObjectiveOptimizer.h</a>&gt;</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="preprocessor">#include &lt;<a class="code" href="_c_m_a_individual_8h.html">shark/Algorithms/DirectSearch/CMA/CMAIndividual.h</a>&gt;</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="preprocessor">#include &lt;<a class="code" href="_penalizing_evaluator_8h.html">shark/Algorithms/DirectSearch/Operators/Evaluation/PenalizingEvaluator.h</a>&gt;</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span> </div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceshark.html" title="AbstractMultiObjectiveOptimizer.">shark</a> {</div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment"></span> </div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment">/// \brief Implements the elitist CMA-ES.</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment">/// </span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment">/// The algorithm is based on</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment">/// </span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment">/// C. Igel, T. Suttorp, and N. Hansen. A Computational Efficient</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment">/// Covariance Matrix Update and a (1+1)-CMA for Evolution</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment">/// Strategies. In Proceedings of the Genetic and Evolutionary</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment">/// Computation Conference (GECCO 2006), pp. 453-460, ACM Press, 2006</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment">/// </span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment">/// D. V. Arnold and N. Hansen: Active covariance matrix adaptation for</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment">/// the (1+1)-CMA-ES. In Proceedings of the Genetic and Evolutionary</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment">/// \ingroup singledirect</span></div>
<div class="foldopen" id="foldopen00069" data-start="{" data-end="};">
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html">   69</a></span><span class="comment"></span><span class="keyword">class </span><a class="code hl_class" href="classshark_1_1_elitist_c_m_a.html" title="Implements the elitist CMA-ES.">ElitistCMA</a> : <span class="keyword">public</span> <a class="code hl_class" href="classshark_1_1_abstract_single_objective_optimizer.html" title="Base class for all single objective optimizer.">AbstractSingleObjectiveOptimizer</a>&lt;RealVector &gt;{        </div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span> </div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a10540d49901609329608c4dfa5d13361">   72</a></span>    <a class="code hl_define" href="_d_l_l_support_8h.html#a54b73283f7f70b27fbd8ac5d4621827f" title="Defines SHARK_COMPILE_DLL.">SHARK_EXPORT_SYMBOL</a> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a10540d49901609329608c4dfa5d13361">ElitistCMA</a>(random::rng_type&amp; rng = <a class="code hl_variable" href="namespaceshark_1_1random.html#ab5c1547eee483974d008d43f621a2234">random::globalRng</a>);</div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="comment"></span> </div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="comment">    /// \brief From INameable: return the class name.</span></div>
<div class="foldopen" id="foldopen00075" data-start="{" data-end="}">
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a7b47ad2c14d583ce71dbcacb981dc19d">   75</a></span><span class="comment"></span>    std::string <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a7b47ad2c14d583ce71dbcacb981dc19d" title="From INameable: return the class name.">name</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="keyword">    </span>{ <span class="keywordflow">return</span> <span class="stringliteral">&quot;ElitistCMA&quot;</span>; }</div>
</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span> </div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a1c7671e276787d93cc32ff6165d4b5f6">   78</a></span>    <a class="code hl_define" href="_d_l_l_support_8h.html#a54b73283f7f70b27fbd8ac5d4621827f" title="Defines SHARK_COMPILE_DLL.">SHARK_EXPORT_SYMBOL</a> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a1c7671e276787d93cc32ff6165d4b5f6" title="Read the component from the supplied archive.">read</a>( <a class="code hl_typedef" href="namespaceshark.html#ada68729491840669e47c8ad42282424f" title="Type of an archive to read from.">InArchive</a> &amp; archive );</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span> </div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a323034584e6ae4951ab79f9b504728fd">   80</a></span>    <a class="code hl_define" href="_d_l_l_support_8h.html#a54b73283f7f70b27fbd8ac5d4621827f" title="Defines SHARK_COMPILE_DLL.">SHARK_EXPORT_SYMBOL</a> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a323034584e6ae4951ab79f9b504728fd" title="Write the component to the supplied archive.">write</a>( <a class="code hl_typedef" href="namespaceshark.html#af4f8eb8e9618f5236b71bbcb12b8a524" title="Type of an archive to write to.">OutArchive</a> &amp; archive ) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span> </div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span>    <span class="keyword">using </span><a class="code hl_class" href="classshark_1_1_abstract_single_objective_optimizer.html" title="Base class for all single objective optimizer.">AbstractSingleObjectiveOptimizer</a>&lt;RealVector &gt;<a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a68ca942a72b59c681642a33d98f36e72" title="Initializes the algorithm for the supplied objective function.">::init</a>;</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span>    <span class="comment"></span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment">    /// \brief Initializes the algorithm for the supplied objective function.</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a68ca942a72b59c681642a33d98f36e72">   85</a></span><span class="comment"></span>    <a class="code hl_define" href="_d_l_l_support_8h.html#a54b73283f7f70b27fbd8ac5d4621827f" title="Defines SHARK_COMPILE_DLL.">SHARK_EXPORT_SYMBOL</a> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a68ca942a72b59c681642a33d98f36e72" title="Initializes the algorithm for the supplied objective function.">init</a>( <a class="code hl_typedef" href="classshark_1_1_abstract_single_objective_optimizer.html#aa4c05609c54d7ebc99d099e7dd6e228f">ObjectiveFunctionType</a> <span class="keyword">const</span>&amp; function, <a class="code hl_typedef" href="classshark_1_1_abstract_single_objective_optimizer.html#a85f0d04fdfb094dba4dc80b1fb5e3adb">SearchPointType</a> <span class="keyword">const</span>&amp; p);</div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment"></span> </div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment">    ///\brief Executes one iteration of the algorithm.</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#afd2e76bdf537a5cdf3287c4c197e1138">   88</a></span><span class="comment"></span>    <a class="code hl_define" href="_d_l_l_support_8h.html#a54b73283f7f70b27fbd8ac5d4621827f" title="Defines SHARK_COMPILE_DLL.">SHARK_EXPORT_SYMBOL</a> <span class="keywordtype">void</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#afd2e76bdf537a5cdf3287c4c197e1138" title="Executes one iteration of the algorithm.">step</a>(<a class="code hl_typedef" href="classshark_1_1_abstract_single_objective_optimizer.html#aa4c05609c54d7ebc99d099e7dd6e228f">ObjectiveFunctionType</a> <span class="keyword">const</span>&amp; function);</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span>    <span class="comment"></span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment">    /// \brief Returns true when the active update is used (default true).</span></div>
<div class="foldopen" id="foldopen00091" data-start="{" data-end="}">
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a5a3da54f1bf2d73e7a96f140e3e91f61">   91</a></span><span class="comment"></span>    <span class="keywordtype">bool</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a5a3da54f1bf2d73e7a96f140e3e91f61" title="Returns true when the active update is used (default true).">activeUpdate</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span>        <span class="keywordflow">return</span> m_activeUpdate;</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span>    }<span class="comment"></span></div>
</div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment">    /// \brief Setter function to enable active update. Returns true when the active update is used (default true).</span></div>
<div class="foldopen" id="foldopen00095" data-start="{" data-end="}">
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#afaccb84cce50e824d61dd043457cd44e">   95</a></span><span class="comment"></span>    <span class="keywordtype">bool</span>&amp; <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#afaccb84cce50e824d61dd043457cd44e" title="Setter function to enable active update. Returns true when the active update is used (default true).">activeUpdate</a>(){</div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span>        <span class="keywordflow">return</span> m_activeUpdate;</div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span>    }</div>
</div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span>    <span class="comment"></span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="comment">    /// \brief Returns the penalty factor for an individual that is outside the feasible area.</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="comment">    ///</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="comment">    /// The value is multiplied with the distance to the nearest feasible point.</span></div>
<div class="foldopen" id="foldopen00102" data-start="{" data-end="}">
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a415fd8e3a2a3698628e7cbe3bdea0ad4">  102</a></span><span class="comment"></span>    <span class="keywordtype">double</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a415fd8e3a2a3698628e7cbe3bdea0ad4" title="Returns the penalty factor for an individual that is outside the feasible area.">constrainedPenaltyFactor</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span>        <span class="keywordflow">return</span> m_evaluator.<a class="code hl_variable" href="structshark_1_1_penalizing_evaluator.html#aed43bc8e8fd6540c49bf525f9c60217e" title="Penalty factor , default value:  .">m_penaltyFactor</a>;</div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span>    }</div>
</div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span>    <span class="comment"></span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment">    /// \brief Returns a reference to the penalty factor for an individual that is outside the feasible area.</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment">    ///</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment">    /// The value is multiplied with the distance to the nearest feasible point.</span></div>
<div class="foldopen" id="foldopen00109" data-start="{" data-end="}">
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a61ddc9606d203965e2b9f292c9acbea5">  109</a></span><span class="comment"></span>    <span class="keywordtype">double</span>&amp; <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a61ddc9606d203965e2b9f292c9acbea5" title="Returns a reference to the penalty factor for an individual that is outside the feasible area.">constrainedPenaltyFactor</a>(){</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span>        <span class="keywordflow">return</span> m_evaluator.<a class="code hl_variable" href="structshark_1_1_penalizing_evaluator.html#aed43bc8e8fd6540c49bf525f9c60217e" title="Penalty factor , default value:  .">m_penaltyFactor</a>;</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span>    }</div>
</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span>    <span class="comment"></span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="comment">    /// \brief  Returns the current step length</span></div>
<div class="foldopen" id="foldopen00114" data-start="{" data-end="}">
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a2d6e18f8d1445bcd935e98f3ff434033">  114</a></span><span class="comment"></span>    <span class="keywordtype">double</span> <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a2d6e18f8d1445bcd935e98f3ff434033" title="Returns the current step length.">sigma</a>()<span class="keyword">const</span>{</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span>        <span class="keywordflow">return</span> m_individual.<a class="code hl_function" href="classshark_1_1_individual.html#addfc461c9e7394ee238e6f5c18537646" title="Returns a reference to the chromosome that is associated with the individual.">chromosome</a>().m_stepSize;</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span>    }</div>
</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span>    <span class="comment"></span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span><span class="comment">    /// \brief  Returns the current step length</span></div>
<div class="foldopen" id="foldopen00119" data-start="{" data-end="}">
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"><a class="line" href="classshark_1_1_elitist_c_m_a.html#a2a9043c1b6618883d267495170ee70a4">  119</a></span><span class="comment"></span>    <span class="keywordtype">double</span>&amp; <a class="code hl_function" href="classshark_1_1_elitist_c_m_a.html#a2a9043c1b6618883d267495170ee70a4" title="Returns the current step length.">sigma</a>(){</div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span>        <span class="keywordflow">return</span> m_individual.<a class="code hl_function" href="classshark_1_1_individual.html#addfc461c9e7394ee238e6f5c18537646" title="Returns a reference to the chromosome that is associated with the individual.">chromosome</a>().m_stepSize;</div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span>    }</div>
</div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span> </div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span>    <a class="code hl_class" href="classshark_1_1_c_m_a_individual.html">CMAIndividual&lt;double&gt;</a> m_individual;<span class="comment">///&lt; Individual holding strategy parameter. usd as parent and offspring</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno">  125</span>    <a class="code hl_struct" href="structshark_1_1_penalizing_evaluator.html" title="Penalizing evaluator for scalar objective functions.">PenalizingEvaluator</a> m_evaluator;<span class="comment">///&lt; evaluates the fitness of the individual and handles constraints</span></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>    std::vector&lt;double&gt; m_ancestralFitness; <span class="comment">///&lt; stores the last k fitness values (by default 5).</span></div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span>    <span class="keywordtype">bool</span> m_activeUpdate;<span class="comment">///&lt; Should bad individuals be actively purged from the strategy?</span></div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span> </div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span>    random::rng_type* mpe_rng;<span class="comment">///&lt; the internal random number generator</span></div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>};</div>
</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>}</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="preprocessor">#endif</span></div>
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